Microstructure and metal-insulator transition in single crystalline KMo4O6
| Autor: | B. Ferreira, L. M. S. Alves, Antonio Fernando Sartori, Margareth Spangler Andrade, Mariana Lanzoni Maffei, Carlos Alberto Moreira dos Santos |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Materials science
low-dimensional system Scanning electron microscope Mechanical Engineering Atmospheric temperature range Condensed Matter Physics Microstructure Tetragonal crystal system Crystallography Magnetization Mechanics of Materials Electrical resistivity and conductivity KMo4O6 lcsh:TA401-492 General Materials Science lcsh:Materials of engineering and construction. Mechanics of materials single crystal Single crystal Powder diffraction |
| Zdroj: | Materials Research, Vol 15, Iss 6, Pp 998-1002 (2012) Materials Research v.15 n.6 2012 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Volume: 15, Issue: 6, Pages: 1002-998, Published: 11 OCT 2012 |
| ISSN: | 1516-1439 |
| Popis: | High quality KMo4O6 single crystals with tetragonal structure (space group P4/mbm) have been prepared by fused salt electrolysis. The crystals were studied by scanning electron microscopy (SEM), X-ray diffractometry, electrical resistivity, and magnetization measurements. X-ray powder diffraction patterns and SEM have given some information on the growth of single crystals. Electrical resistivity as a function of temperature shows that the KMo4O6 compound is a bad metal with resistivity change of approximately 30% in the temperature range from 2 to 300K. A metal-insulator transition (MIT), observed at approximately 110K, has been also confirmed for this material. Magnetization as a function of temperature agrees with previous report, however a magnetic ordering has been observed in M(H) curves in the whole temperature range. |
| Databáze: | OpenAIRE |
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